Pith Number

pith:5X4BFXSV

pith:2011:5X4BFXSV2FG4PV2G6ESGELB5OI

not attested not anchored not stored refs pending

Implementation of Two Way Free Space Quantum Key Distribution

M. F. Abdul Khir, M. N. Mohd Zain, S. Saharudin, S. Shaari, Suryadi

arxiv:1108.3411 v1 · 2011-08-17 · quant-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5X4BFXSV2FG4PV2G6ESGELB5OI}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T04:01:11.441108Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

edf812de55d14dc7d746f124622c3d72142e81371e13a12297dab1c7d1b3e26f

Aliases

arxiv: 1108.3411 · arxiv_version: 1108.3411v1 · doi: 10.48550/arxiv.1108.3411 · pith_short_12: 5X4BFXSV2FG4 · pith_short_16: 5X4BFXSV2FG4PV2G · pith_short_8: 5X4BFXSV

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/5X4BFXSV2FG4PV2G6ESGELB5OI \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: edf812de55d14dc7d746f124622c3d72142e81371e13a12297dab1c7d1b3e26f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2ea818ca3b9a20efe2a754c119167c1af9dbd6e3c41e89bb6c4eb20bb2307ba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-08-17T07:11:40Z",
    "title_canon_sha256": "bea466c30bfa2d01fdce9163976d43d4a18a8aab1f97723b3e69e32fabb93c50"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.3411",
    "kind": "arxiv",
    "version": 1
  }
}